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4

The hair-like structures covering young fern leaves are called

A. scales

B. elaters

C. ramenta

D. none of these.

Correct Answer :

C. ramenta


Related Questions

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4

Pteridophytes are so-called

A. phanerogams

B. spermatophytes

C. vascular cryptogams

D. amphibians of plant kingdom

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4

The stele of Lycopodium is

A. polystele

B. siphonostele

C. haplostele

D. actinostele

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4

Most primitive living vascular plants are

A. Brown algae

B. Sphagnum

C. Cycads

D. Ferns

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4

The following is the most primitive vascular plant:

A. Ferns

B. Cycas

C. Sphagnum

D. Psilotum

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4

Gametangia of fern are produced on the

A. leaves

B. sorus

C. prothallus

D. ramenta

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4

Young sporophyte of Pteris draws nourishment from prothallus through

A. haustoria

B. foot

C. root

D. rhizoids

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4

Fern differs from Selaginella

A. in arrangement of leaves

B. in having rhizoids

C. in absence of heterosporous condition

D. none of these

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4

In the archegonium of fern tliere are/is

A. four neck canal cells

B. three neck canal cells

C. one neck canal cell having one nucleus

D. one neck canal cell having two nuclei

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4

What happens to the spore of ferns ?

A. It joins with another spore to form a seedling

B. It encysts and is devoured by snail

C. It germinates to become another spore forming a fern plant

D. It germinates to become a prothallus

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4

Leptosporangiate sporangium is

A. single-celled

B. multiceiled and formed from many cells

C. multicellular

D. multiceiled and formed from a single cell

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4

Stem is polystelic in

A. Selaginella

B. Cycas

C. Pinus

D. All of these

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4

Fern differs from moss because it has

A. (a) swimming antherozoids

B. independent gametophyte

C. multiciliate sperms

D. buihate sperms

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4

In Selaginella, an "organ suigeneris" is

A. rhizoid

B. root

C. ligule

D. rhizophore

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4

Sporophyte of Pteris

A. is independent of gametophyte from the beginning

B. is dependent on the gametophyte only in the beginning

C. supplies water and inorganic salt to the gametophyte

D. none of these

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4

Circinate venation is found in

A. Cycas

B. Fern

C. Both (a) and (b)

D. None of these

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4

Spore bearing organ of a fern i* culled

A. sporophyll

B. Sorus

C. ramenta

D. none of these

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4

Sporrs in fern are produced through

A. mitosis

B. mitosis and meiosis

C. meiosis

D. none of these

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4

Gametes are produced in prothallus by

A. anthers and archegonia

B. ascogonium and anthers

C. antheridia and archegonia

D. none of these

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4

Seed habit originated in

A. Pteridophytes

B. Bryophytes

C. Algae

D. Fungi

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4

Selaginella is less advanced than Pinus becuase

A. it has no fruits

B. it has no flowers

C. its pollination and fertilization is through anthers.

D. it is heterothallic

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4

Vessels are not found in the

A. Dryopteris

B. Mango

C. Guava

D. Cnetum

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4

If a sporangium develops from a single initial, it is called

A. leptosporangiate

B. eusporangiate

C. both (a) and (b)

D. none of these

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4

The number of megaspores in Selaginella rupestris is

A. one

B. two

C. three

D. four

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4

In Pteris, the petiole has a groove and its stele is

A. Horse shoe shaped

B. W-shaped

C. M-shaped

D. Without any definite shape

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4

The hair-like structures covering young fern leaves are called

A. scales

B. elaters

C. ramenta

D. none of these.

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4

The stele in fern is

A. eustele

B. siphostele

C. dictyostele

D. none of these

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4

Multiflagellate sperms are the characteristic of

A. Mosses

B. Riccia

C. Ferns

D. Pogotiatum

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4

Selaginella and fern share the following character:

A. Protostelic stele

B. Leptosporangiate sporangium

C. Heterospory

D. Adsence of ovules

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4

Microsporangia and macrosporangia are found in the same cone of

A. Dryopteris

B. Selaginella

C. Psilotum

D. Equisetum

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4

The gametophyte and sporophyte generations are independent in

A. Moss

B. Fern

C. Pine

D. None of these